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Dead plants and animals in the soil are broken down into humus by the efforts of

  • A.bacteria and fungi in the soil.
  • B.Viruses in the soil.
  • C.bacteria only in the soil.
  • D.Fungi and viruses in the soil.

Answer: A

Correct answer: bacteria and fungi in the soil.

Decomposition is the work of both bacteria and fungi. Fungi are particularly good at breaking down tough materials such as cellulose and lignin, and bacteria complete the process - between them turning dead matter into humus and releasing the nutrients it contains. Viruses play no part.

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